Skip to main content

T3A08:What is a likely cause of irregular fading of signals propagated by the ionosphere?

T3A08T3A

What is a likely cause of irregular fading of signals propagated by the ionosphere?

Direct answer summary (2026-2030 NCVEC pool)

The official correct answer for T3A08 is Random combining of signals arriving via different paths.

The key fact is Random combining of signals arriving via different paths. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.

← T3A07T3A09 →

More questions in T3A

T3A01Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet?T3A02How does vegetation affect UHF and microwave signals?T3A03What antenna polarization is normally used for long-distance CW and SSB contacts on the VHF and UHF bands?T3A04What is the effect of antenna cross-polarization over a line-of-sight VHF or UHF path?T3A05When using a directional antenna, how might your station be able to communicate with a distant repeater if buildings or obstructions are blocking the direct line of sight path?T3A06What is the meaning of the term “picket fencing”?